题目内容
18．-_________ run in the hallways．-Sorry，I won't．（ ）
| A． | Please | B． | Please not | C． | Not | D． | Don't |
分析 --不要在走廊里跑．
--抱歉，我不会了．
解答 答案：D．
结合Sorry，I won't 可知上文是否定祈使句，故用don't+动词原形，故选D．
点评 一般说来，祈使句的否定是在祈使句首加Don't．如：
（1）Come here．-Don't come here．不要来这儿．
（2）Be angry．-Don't be angry．不要生气
当祈使句表示邀请或建议（Let's…） 时，则在Let's与 do之间加not．如：
（1）Let's talk about it．-Let's not talk about it．我们别谈论它吧．
（2）Let's go swimming there．-Let's not go swimming there．我们别去那里游泳吧．
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| 22．A．instead of | B．becauseof | C．more than | D．less than |
| 23 A．discovered | B．develop | C．built | D．developed |
| 24 A．science | B．history | C．problem | D secret |
| 25．A by | B．from | C．without | D for |
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| 32 A．again | B．soon | C．once | D already |
| 33．A．told | B．asked | C．warned | D．advised |
| 34．A．shouldn't | B．should | C．wouldn't | D．would |
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